Blender crashes on many modeling operations (loopcut, extrude, duplication, ...) on mesh with normal map node connected to material #78361

New Issue

Vyacheslav Kobozev · 2020-06-27T16:54:35+02:00

2020-06-27 16:54:35 +02:00

System Information
Operating system: Windows-7-6.1.7601-SP1 64 Bits
Graphics card: GeForce GTX 660 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 445.87

Blender Version
Broken: version: 2.90.0 Alpha, branch: master, commit date: 2020-06-26 17:24, hash: b7b57e7155
Worked: 2.83.1

Short description of error
Loopcut crashes Blender.
Without material everything fine.
With empty normalmap node it crashes twice and then was okay.
This file crashes after loopcut always.
normheight1.blend
2020-06-27_17-46-24.mp4

**System Information** Operating system: Windows-7-6.1.7601-SP1 64 Bits Graphics card: GeForce GTX 660 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 445.87 **Blender Version** Broken: version: 2.90.0 Alpha, branch: master, commit date: 2020-06-26 17:24, hash: `b7b57e7155` Worked: 2.83.1 **Short description of error** Loopcut crashes Blender. Without material everything fine. With empty normalmap node it crashes twice and then was okay. This file crashes after loopcut always. [normheight1.blend](https://archive.blender.org/developer/F8647786/normheight1.blend) [2020-06-27_17-46-24.mp4](https://archive.blender.org/developer/F8647784/2020-06-27_17-46-24.mp4)

Vyacheslav Kobozev commented

2020-06-27 16:54:35 +02:00

Added subscriber: @Vyach

blender-admin commented

2020-06-27 16:54:35 +02:00

#78334 was marked as duplicate of this issue

Hidde H commented

2020-06-27 20:46:49 +02:00

Added subscriber: @mOOngaze

Hidde H commented

2020-06-27 20:46:49 +02:00

I can reproduce it on version: 2.90.0 Alpha, branch: master, commit date: 2020-06-25 21:53, hash: 62aa103d48
It could be related to my bug report of shift-d in edit mode while normal map is connected?

I can reproduce it on version: 2.90.0 Alpha, branch: master, commit date: 2020-06-25 21:53, hash: 62aa103d48 It could be related to [my bug report ](https://developer.blender.org/T78334) of shift-d in edit mode while normal map is connected?

Vincent Blankfield commented

2020-06-29 13:04:12 +02:00

Added subscriber: @VincentBlankfield

Vincent Blankfield commented

2020-06-29 13:04:12 +02:00

Same as #78334 similar to #78054.
Seems to be introduced in 8f97a64dec

Test that covers all the issues:

1. Grab the normal_map.tangent_space_bug_r1.blend file from #78054
1. Open it, make sure the viewport is in material preview or render mode
3a. Press and hold Tab to quickly switch to and from edit mode. Expect crash while holding it.
3b. In object mode select one of the cubes. Go to edit mode. Add loop cut with Ctrl+R. Expect crash when the loop cut is added.
3c. In edit mode select some geometry. Press Shift+D to duplicate. Expect crash when duplicate is created.

3b and 3c will also crash with the default cube in the default scene, as long as the viewport is in rendered/lookdev mode and the cube has a normal map connected to the normal input of it's BSDF (empty normal map node will do).

In case of 3b and 3c the crash occurs in BLI_mempool.c:352 void *BLI_mempool_alloc(BLI_mempool *pool):

 pool->free = free_pop->next;
 /*
 unable to read free_pop->next (free_pop->free is 0x3f0000003ec00000)
 where free_pop is dest->pool from CustomData_bmesh_copy_data_exclude_by_type(const CustomData *source,
                                                                              CustomData *dest,
                                                                              void *src_block,
                                                                              void **dest_block,
                                                                              const CustomDataMask mask_exclude)
 */

In case of 3a it crashes not so frequently in random places (after 8f97a64dec).

Same as #78334 similar to #78054. Seems to be introduced in 8f97a64dec Test that covers all the issues: - 1. Grab the [normal_map.tangent_space_bug_r1.blend file ](https://dev-files.blender.org/file/download/2niegnbaosk4seyk353s/PHID-FILE-bkmztclnvqzqehflxu24/normal_map.tangent_space_bug_r1.blend) from #78054 - 2. Open it, make sure the viewport is in material preview or render mode - 3a. Press and hold `Tab` to quickly switch to and from edit mode. Expect crash while holding it. - 3b. In object mode select one of the cubes. Go to edit mode. Add loop cut with `Ctrl+R`. Expect crash when the loop cut is added. - 3c. In edit mode select some geometry. Press `Shift+D` to duplicate. Expect crash when duplicate is created. *3b* and *3c* will also crash with the default cube in the default scene, as long as the viewport is in rendered/lookdev mode and the cube has a normal map connected to the normal input of it's BSDF (empty normal map node will do). In case of *3b* and *3c* the crash occurs in `BLI_mempool.c:352 void *BLI_mempool_alloc(BLI_mempool *pool)`: ``` pool->free = free_pop->next; /* unable to read free_pop->next (free_pop->free is 0x3f0000003ec00000) where free_pop is dest->pool from CustomData_bmesh_copy_data_exclude_by_type(const CustomData *source, CustomData *dest, void *src_block, void **dest_block, const CustomDataMask mask_exclude) */ ``` In case of 3a it crashes not so frequently in random places (after 8f97a64dec).

Philipp Oeser commented

2020-06-29 13:31:07 +02:00

Added subscribers: @Jeroen-Bakker, @lichtwerk

Philipp Oeser commented

2020-06-29 13:31:07 +02:00

Changed status from 'Needs Triage' to: 'Confirmed'

Jeroen Bakker was assigned by Philipp Oeser

2020-06-29 13:31:07 +02:00

Philipp Oeser commented

2020-06-29 13:31:07 +02:00

@Jeroen-Bakker: mind checking?

Philipp Oeser changed title from ~~Blender crashes: loopcut on mesh with material or normalmap~~ to Blender crashes on many modeling operations (loopcut, extrude, duplication, ...) on mesh with normal map node connected to material

2020-06-29 13:36:15 +02:00

Jeroen Bakker commented

2020-06-29 14:57:47 +02:00

# Blender 2.90.0, Commit date: 2020-06-29 12:33, Hash 85cde12bffee
Engine 'CYCLES' not available for scene 'Scene' (an add-on may need to be installed or enabled)  # Error
bpy.context.space_data.shading.type = 'SOLID'  # Property
bpy.context.space_data.shading.type = 'MATERIAL'  # Property
bpy.ops.mesh.shortest_path_pick(use_fill=False)  # Operator
bpy.ops.mesh.shortest_path_pick(edge_mode='SELECT', use_fill=True, index=404)  # Operator

# backtrace
b290(BLI_system_backtrace+0x37) [0x3fe5767]
b290() [0xa3d57a]
/lib/x86_64-linux-gnu/libc.so.6(+0x46210) [0x7f16d8f82210]
b290(BLI_mempool_alloc+0x1f) [0x3f8b84f]
b290() [0xca5aac]
b290(CustomData_bmesh_copy_data_exclude_by_type+0x1a9) [0xca5e39]
b290() [0xddbc2f]
b290(bmesh_kernel_split_edge_make_vert+0x101) [0xddd9f1]
b290(BM_edge_split+0x14d) [0xe0168d]
b290() [0xe207fa]
b290() [0xe2141c]
b290(bmo_subdivide_edges_exec+0x75f) [0xe21c2f]
b290(BMO_op_exec+0x35) [0xdf3375]
b290(BM_mesh_esubdivide+0x9c) [0xe229bc]
b290() [0x11fc683]
b290() [0x11fd4fe]
b290() [0xd1e72b]
b290() [0xd0a444]
b290() [0xd0d500]
b290() [0xd0e72a]
b290() [0xd0ea3c]
b290(wm_event_do_handlers+0x742) [0xd0f552]
b290(WM_main+0x20) [0xd05b50]
b290(main+0x2f5) [0x9fb175]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf3) [0x7f16d8f630b3]
b290(_start+0x2e) [0xa3998e]

It seems to crash in a different part, then I expected but hey anything can happen with legacycode and threading. I will dive into it. Could be that calculating tangent normals are also storing other stuff...

``` # Blender 2.90.0, Commit date: 2020-06-29 12:33, Hash 85cde12bffee Engine 'CYCLES' not available for scene 'Scene' (an add-on may need to be installed or enabled) # Error bpy.context.space_data.shading.type = 'SOLID' # Property bpy.context.space_data.shading.type = 'MATERIAL' # Property bpy.ops.mesh.shortest_path_pick(use_fill=False) # Operator bpy.ops.mesh.shortest_path_pick(edge_mode='SELECT', use_fill=True, index=404) # Operator # backtrace b290(BLI_system_backtrace+0x37) [0x3fe5767] b290() [0xa3d57a] /lib/x86_64-linux-gnu/libc.so.6(+0x46210) [0x7f16d8f82210] b290(BLI_mempool_alloc+0x1f) [0x3f8b84f] b290() [0xca5aac] b290(CustomData_bmesh_copy_data_exclude_by_type+0x1a9) [0xca5e39] b290() [0xddbc2f] b290(bmesh_kernel_split_edge_make_vert+0x101) [0xddd9f1] b290(BM_edge_split+0x14d) [0xe0168d] b290() [0xe207fa] b290() [0xe2141c] b290(bmo_subdivide_edges_exec+0x75f) [0xe21c2f] b290(BMO_op_exec+0x35) [0xdf3375] b290(BM_mesh_esubdivide+0x9c) [0xe229bc] b290() [0x11fc683] b290() [0x11fd4fe] b290() [0xd1e72b] b290() [0xd0a444] b290() [0xd0d500] b290() [0xd0e72a] b290() [0xd0ea3c] b290(wm_event_do_handlers+0x742) [0xd0f552] b290(WM_main+0x20) [0xd05b50] b290(main+0x2f5) [0x9fb175] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf3) [0x7f16d8f630b3] b290(_start+0x2e) [0xa3998e] ``` It seems to crash in a different part, then I expected but hey anything can happen with legacycode and threading. I will dive into it. Could be that calculating tangent normals are also storing other stuff...

blender-admin commented

2020-06-29 15:36:46 +02:00

This issue was referenced by 13e2337da7

This issue was referenced by 13e2337da7b9c235aadfaf28595c14de3b1b8479

Jeroen Bakker commented

2020-06-29 15:38:39 +02:00

Changed status from 'Confirmed' to: 'Resolved'

Jeroen Bakker closed this issue

2020-06-29 15:38:39 +02:00

Thomas Dinges added this to the 2.90 milestone 2023-02-08 16:26:17 +01:00

Sign in to join this conversation.

No Label

Download

What's New

Blender Studio

Manual

Developers Blog

Documentation

Benchmark

Blender Conference

Development Fund

One-time Donations

Blender crashes on many modeling operations (loopcut, extrude, duplication, ...) on mesh with normal map node connected to material #78361